what will be relative velocity,when two bodies move in opposite directiona.Negative b.Positivec.zero d.a&b both
Biology · High School · Tue Nov 03 2020
Answered on
When we say relative velocity, it refers to the vector difference of two moving bodies.
Relative Velocity can be presented as,
Vab= Va - Vb
where,
Vab = Relative Velocity
Va = Velocity of body a
Vb = Velocity of body b
Basing on the given formula, the relative velocity of two bodies moving on opposite direction will become positive.
This can be represented by an example.
Given:
Va = 30 m/s travelling East
Vb = 20 m/s travelling West
(West means going to the left, which means the value will be negative)
Vb = -20 m/s
Substitute the given in the equation for relative velocity.
Vab = 30 m/s- (-20 m/s)
Opposite signs mean the answer will become positive, therefore the operation will become addition.
Vab = 30 m/s +20 m/s
Vab = 50 m/s